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Home >> Suzuki >> 2005 >> Reno LX, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine General Information And Diagnosis >> Diagnostic Information and Procedures >> Idle Air Control System Check >> Idle Air Control Valve Reset Procedure
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Idle Air Control Valve Reset Procedure

Whenever the battery cable or the Engine Control Module (ECM) connector or the ECM fuse EF22 is disconnected or replaced, the following idle learn procedure must be performed:

  1. Turn the ignition ON for 5 seconds.
  2. Turn the ignition OFF for 10 seconds.
  3. Start the engine in park/neutral.
  4. Allow the engine to run until the engine coolant is above 185°F (85°C).
  5. Turn the A/C ON for 10 seconds, if equipped.
  6. Turn the A/C OFF for 10 seconds, if equipped.
  7. If the vehicle is equipped with an automatic transaxle, apply the parking brake. While pressing the brake pedal, place the transaxle in D (drive).
  8. Turn the A/C ON for 10 seconds, if equipped.
  9. Turn the A/C OFF for 10 seconds, if equipped.
  10. Turn the ignition OFF. The idle learn procedure is complete.
DIAGNOSTIC PROCEDURE

Step Action Value(s) Yes No
1 Perform an On-Board Diagnostic (OBD II) system check.
Was the check performed?		 - Go to Step 2 Go to "ON-BOARD DIAGNOSTIC (OBD II) SYSTEM CHECK :"
2
  1. Turn the ignition OFF.
  2. Remove Idle Air Control (IAC) valve.
  3. Inspect the IAC passages for restrictions.

Is the problem found?		 - Go to Step 3 Go to Step 4
3 Clean the IAC passages.
Is the repair complete?		 - System OK -
4 Measure the resistance between following terminals of IAC valve.
  1. Terminal C and D
  2. Terminal A and B

Does the resistance equal to the value specified?		 40-80 Ω. Go to Step 6 Go to Step 5
5 Replace the IAC valve.
Is the repair complete?		 - System OK -
6
  1. Disconnect the Engine control Module (ECM) connector.
  2. Check for an open or short in the wires between following terminals.
    • Terminal D of IAC valve connector and terminal M13 of ECM connector
    • Terminal C of IAC valve connector and terminal M15 of ECM connector
    • Terminal B of IAC valve connector and terminal M30 of ECM connector
    • Terminal A of IAC valve connector and terminal M14 of ECM connector

Is the problem found?		 - Go to Step 8 Go to Step 7
7 Repair an open or short circuit as needed.
Is the repair complete?		 - System OK -
8 Inspect the IAC connector terminals and the ECM connector terminals.
Is the problem found?		 - Go to Step 9 Go to Step 10
9 Repair or replace the throttle body assembly and/or ECM connector terminals as needed.
Is the repair complete?		 - System OK -
10 Replace the ECM.
Is the repair complete?		 - System OK -
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